tính 71 - 27
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\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{71}\\{27}\end{array}} \\\,\,\,\,44\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{66}\\{39}\end{array}} \\\,\,\,\,27\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{55}\\{47}\end{array}} \\\,\,\,\,\,\,\,8\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{44}\\{26}\end{array}} \\\,\,\,\,18\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{70}\\{46}\end{array}} \\\,\,\,\,24\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{82}\\{14}\end{array}} \\\,\,\,\,68\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{63}\\{37}\end{array}} \\\,\,\,\,26\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{86}\\{28}\end{array}} \\\,\,\,\,58\end{array}\) |